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Basic helloworld exmaple #465

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Basic helloworld exmaple #465

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9cedbf2
hello world example
Aug 23, 2021
5cb9c17
Update README.md
Aug 23, 2021
cc59a98
Update README.md
Aug 23, 2021
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16 changes: 16 additions & 0 deletions examples/helloworld/CMakeLists.txt
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cmake_minimum_required (VERSION 3.8)


find_package (Coin COMPONENTS Coin4 REQUIRED)
find_package (SoQt COMPONENTS SoQt REQUIRED)
find_package(Qt5 COMPONENTS Core Widgets REQUIRED)

add_executable (coin_helloworld
"coin_helloworld.cpp"
)

target_link_libraries(coin_helloworld PRIVATE
Coin::Coin SoQt::SoQt
Qt5::Core Qt5::Widgets
)

9 changes: 9 additions & 0 deletions examples/helloworld/README.md
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# HelloWorld example

Very basic helloworld example to get started with Coin3d.

Building instructions:

cmake -DQt5_DIR=<Qt5 path> -DCoin_DIR=<Coin3d path> -DSoQt_DIR=<SoQt path> <example source path>
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@VolkerEnderlein VolkerEnderlein Oct 4, 2021 •
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According to this CMake question on StackOverflow you should use either <package name>_ROOT variables as command line arguments or define the <package name>_DIR variables as environment variables. That's why I mostly recommend using the CMAKE_PREFIX_PATH argument on the command line call to CMake (for instance: cmake -S <sourcedir> -B <builddir> -DCMAKE_PREFIX_PATH="<Qt5 path>;<Coin3d path>;<SoQt path>" -G "<selected CMake generator>") You might omit the <SoQt path>, as in general SoQt will be installed in the Coin3d path.

The CMake build command should explicitly mention the config: cmake --build <builddir> --config Release

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@magres 👆

cmake --build .

21 changes: 21 additions & 0 deletions examples/helloworld/coin_helloworld.cpp
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#include <Inventor/Qt/SoQt.h>
#include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/nodes/SoCone.h>

int main(int argc, char** argv)
{

QWidget* mWindow = SoQt::init(argc, argv, argv[0]);
SoSeparator* mRoot = new SoSeparator;
mRoot->ref();
SoCone* mCone = new SoCone;
mRoot->addChild(mCone);
SoQtExaminerViewer eviewer(mWindow);
eviewer.setSceneGraph(mRoot);
eviewer.show();
SoQt::show(mWindow);
SoQt::mainLoop();
mRoot->unref();
return 0;
}